IPv6 Infrastructure

Use Adaptive Server as an IPv6-aware server only in a dual-stack infrastructure, which implements both IPv4 and IPv6.

Sybase applications are IPv6-aware, using the IETF designed primitives.

IPv6 Support
Platform	Adaptive Server IPv6 Awareness	Open Client/Server IPv6 Awareness
Sun Solaris 8 32- and 64- bit	12.5.3a and 15.0	12.5 and 15.0
HP-UX 11i(v1) 32- and 64-bit	12.5.3a and 15.0	12.5 and 15.0
Microsoft Server 2003	12.5.3a and 15.0	12.5 and 15.0
Linux RHEL 3.0	15.0	12.5 and 15.0

Many Sybase products that are Open Client/Server-based, like XP Server, Backup Server, Replication Server and Open Switch became automatically IPv6-aware due to the layered Open Client Transport Control Layer (CTlib->NETlib) which is IPv6-aware for network-socket operations. DBlib-based Open Client products are not IPv6-aware.

Some third-party components in Adaptive Server are not yet IPv6-aware. The functional mechanisms of Adaptive Server Enterprise that are IPv6-aware with respect to the platform / release matrix include:

Connection handler
RPC mechanisms
Job Scheduler Task / agent session connection
Network host API
UDP message support for sybsendmsg
Component Integration Services connectivity
Host / name resolving
XML URL connection handler
Auditing for client address data

The following functional mechanisms in Adaptive Server Enterprise do not currently support IPv6:

Java support
License Management Server
LDAP driver

Before starting Adaptive Server for IPv6-aware operations, make sure that your infrastructure is correctly set up. Once your operating system is correctly configured, you can configure and enable an IPv6 connection handler. Configuring and enabling the IPv6 connection handler requires an additional DCL entry. A single Adaptive Server configuration can typically carry up to 32 connection handler assignments within the DCL.

For example if you have a site-local setup with two domains administrated under the name server setup:

sybase.com - being responsible for all IPv4 networking applications
v6.sybase.com - being responsible for all IPv6 networking applications

The DCL entry for Adaptive Server named “SYBASE” on the host “revival” for port 17100 should look similar to:

SYBASE
master tcp ether revival.sybase.com 17100
query tcp ether revival.sybase.com 17100
master tcp ether revival.v6.sybase.com 17100
query tcp ether revival.v6.sybase.com 17100

When Adaptive Server is started with IPv6-awareness, it creates two connection handlers. One listens on port 17100 for incoming IPv4 clients connection requests, and the other listens on port 17100 for incoming IPv6 clients connection requests.

Note: When you start Adaptive Server, you can set Trace flag 7815 to capture and log IPv4 and IPv6 client address connection requests and host / name lookups.